android - 如何在pjsip中获取PJSUA_CALL_MEDIA_REMOTE_HOLD

Question

我正在开发 PJSIP Android 应用程序，但遇到了调用保持问题。当主叫方将调用置于保持状态时，主叫方正在调用接收方，接收方如何识别远程服务器调用处于保持状态？哪个事件发生在接收者手中？

Answer 1

根据 pjsip 文档:

virtual void onCallMediaState(OnCallMediaStateParam &prm)

Notify application when media state in the call has changed.

普通应用程序需要实现这个回调，例如将通话的媒体连接到声音设备。

这个方法在pjsip java中的Call类中: CallMediaInfo 类包含 pjsua_call_media_status。 使用 pjsua_call_media_status 我们可以知道当前调用媒体状态是 Activity 的还是调用保持。

@Override
    public void onCallMediaState(OnCallMediaStateParam prm)
    {
    CallInfo ci;
    try {
        ci = getInfo();
    } catch (Exception e) {
        return;
    }
    
    CallMediaInfoVector cmiv = ci.getMedia();
    CallMediaInfo callMediaInfo = null;

    for (int i = 0; i < cmiv.size(); i++) {
        CallMediaInfo cmi = cmiv.get(i);
        if (cmi.getType() == pjmedia_type.PJMEDIA_TYPE_AUDIO &&
        (cmi.getStatus() == 
            pjsua_call_media_status.PJSUA_CALL_MEDIA_REMOTE_HOLD ||
         cmi.getStatus() == 
            pjsua_call_media_status.PJSUA_CALL_MEDIA_LOCAL_HOLD) )
        {
            //set ur call status  as hold on your TextView 
        }else if (cmi.getType() == pjmedia_type.PJMEDIA_TYPE_AUDIO &&
        (cmi.getStatus() == 
            pjsua_call_media_status.PJSUA_CALL_MEDIA_ACTIVE))
            {
                //set ur call status  as connected on your TextView 
            }
    }
}